Sickle cell trait-associated deaths: a case series with a review of the literature

This study presents a series of 16 carriers of hemoglobin S (HbS) who died during various circumstances. Many of the cases were associated with mild to moderate exertion. The onset and/or duration of symptoms varied from a few minutes to several hours with many displaying a prolonged lucid interval with stable vital signs. Despite seeking medical treatment, sickle cell trait-related micro-occlusive crisis was never considered in the differential diagnosis. Several cases were associated with sudden death. In those deaths which were delayed, high anion gap and uncompensated metabolic acidosis were typical and were not heat related. Also characteristic were large increases in creatine kinase, alanine aminotransferase, and aspartate aminotransferase along with myoglobinemia. Although the antemortem diagnosis of rhabdomyolysis was made, the underlying cause was never deduced by the clinicians. The sickling found at autopsy is not always a postmortem artifact, and in the right circumstances can be diagnostic.     

Violent criminals locked up: Examining the effect of incarceration on behavioral continuity

Purpose

The purpose of the current study was to determine whether, and the degree to which, inmates committing specific types of violent crimes in the community were prone to commit acts of violence while incarcerated.

Materials and methods

Data were collected from the Texas Department of Criminal Justice on the prison stock population and a restricted admissions cohort serving time during FY 2008.

Results

After controlling for pre-prison and post-conviction characteristics, crime of conviction retained a modest degree of influence on inmates’ propensity to commit dangerous rule violations in prison. Inmates convicted of assault, robbery and other miscellaneous violent crimes were more likely to commit dangerous rule infractions than inmates convicted of property crimes, supporting the behavioral continuity thesis. Inmates convicted of homicide were no more likely, and those convicted of sexual assault less likely, to commit dangerous rule violations in comparison to those convicted of property crimes.

Conclusions

The findings suggest that researchers and prison officials should not view all inmates convicted of one of a broad category of “violent crimes” in the community as being equivalent in their propensity for violence while incarcerated.     

Moving beyond the socialization hypothesis: The effects of maternal smoking during pregnancy on the development of self-control

Purpose

Gottfredson and Hirschi, in A General Theory of Crime, argue that the primary source of self-control is parental socialization. Specifically, parents who fail to supervise their children, to recognize their child's deviant behavior, and to punish such behavior are more likely to raise children with lower levels of self-control. Recent empirical research, however, has broadened the explanatory factors to include sources within schools, neighborhoods, and individual factors as significant contributors to the development of self-control. This study proposes that maternal smoking during pregnancy places additional limits on the development of self-control.

Methods

Using a subsample of the National Longitudinal Study of Youth (N = 542), we provide a comprehensive investigation of the variety of sources of self-control to include both individual and environmental covariates.

Results

Results indicate that maternal smoking during pregnancy significantly impacts the development of self-control net of parental, neighborhood, and school socialization. We also found that individual sources of self-control significantly vary across race and neighborhood context.

Conclusions

The sources of self-control are more complex than socialization from parents, schools, and within neighborhoods occurring in childhood and adolescence.     

Chemical enhancement of footwear impressions in blood on fabric – Part 1: Protein stains

A range of protein stains were utilised for the enhancement of footwear impressions on a variety of fabric types of different colours with blood as a contaminant. A semi-automated stamping device was used to deliver test impressions at a set force to minimise the variability between impressions; multiple impressions were produced and enhanced by each reagent to determine the repeatability of the enhancement. Results indicated that while most protein stains used in this study successfully enhanced impressions in blood on light coloured fabrics, background staining caused interference on natural fabrics. Enhancement on dark coloured fabrics was only achieved using fluorescent protein stains, as non-fluorescent protein stains provided poor contrast.A further comparison was performed with commercially available protein staining solutions and solutions prepared within the laboratory from the appropriate chemicals. Both solutions performed equally well, though it is recommended to use freshly prepared solutions whenever possible.     

Investigation of a typology of alcohol‐related violence defined by ultimate goals

Purpose. Alcohol‐related violence is a serious problem and treatments for high‐risk individuals need to be developed. Classification helps to route people into appropriate treatments. Drawing on animal research, we define alcohol‐related violence in relation to ultimate goals. We propose three types of violence: (1) violence in the pursuit of material goals, (2) violence in pursuit of social dominance goals, and (3) violence as defence in response to threat. The aim is to explore factors that we expect to relate to this tripartite typology, with the aim of providing a preliminary validation. Method. Participants were 149 young male prisoners who had committed an offence of violence that was alcohol related. Semi‐structured interviews elicited information about the offence that enabled classification into one of the three types. Differences between groups were examined at the event level – level of violence during the offence and alcohol consumption before the offence – and at group level – trait aggression, trait anxiety, anger control, and alcohol–aggression outcome expectancies. Results. No differences were found in levels of violence or alcohol consumption. Those whose violence was in the pursuit of material goals were high on trait aggression, trait anger, trait anxiety, and anger suppression. Those who used violence in the pursuit of social dominance showed high trait aggression and trait anger. Those whose violence was a defence in response to threat showed lower trait aggression and trait anger. Conclusion. The findings are discussed in relation to differential group profiles and treatment needs.     

Analysis of Pigmented Inkjet Printer Inks and Printed Documents by Laser Desorption/Mass Spectrometry*,†

Abstract: Anyone with a computer, scanner, and color printer has the capability for creating documents such as identification cards, passports, and counterfeit currency. Laser desorption mass spectrometry (LDMS) has been demonstrated as a powerful tool for colorant analysis. Inkjet printers are now moving largely toward the use of pigments as colorants; their insolubility makes analysis by simpler methods such as thin‐layer chromatography no longer an option. Recent developments in pigmented inkjet printer inks, such as gloss optimizers that coat pigment particles, may prohibit colorant analysis by LDMS. We demonstrate here that pigments used in inks from two Epson printers can be detected and analyzed by LDMS. Also, LDMS spectra of various colors created using a 4‐cartridge (cyan/magenta/yellow/black, CMYK) inkset are evaluated, to begin to develop an approach for unraveling LDMS data from real samples, to determine the number of inks used by a printer, and the chemical composition of the colorants.     

Sex offender residence restriction laws: Parental perceptions and public policy

Despite a steady decline in sex crime over the past twenty years, new laws, such as residence restrictions, targeting such crime have proliferated. Some scholars have argued that public concern about sexual offending against young children has served as a catalyst for the emergence of these laws. Few studies, however, have empirically tested this claim. To address this gap and to contribute to scholarship on public opinion about crime and justice, this research tests a central implication flowing from prior work—namely, the notion that people with children will be more likely to endorse increased restrictions on where sex offenders can live. Analyses of public opinion data from a 2006 poll of Florida residents suggest that parents are indeed significantly more likely to support such restrictions. Implications of the study for research and policy are discussed.     

Chemical enhancement of footwear impressions in blood deposited on fabric — Evaluating the use of alginate casting materials followed by chemical enhancement

Most footwear marks made in blood on a surface such as fabric tend to be enhanced in situ rather than physically recovered using a lifting technique prior to enhancement. This work reports on the use of an alginate material to recover the impressed footwear marks made in blood and deposited on a range of fabric types and colours. The lifted marks were then enhanced using acid black 1 and leuco crystal violet with excellent results.This presents a new method for the lifting and recovery of blood impressions in situ from crime scene followed by subsequent mark enhancement of the lifted impression.